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Search Publications by: Mark A. Kedzierski (Assoc)

Displaying 76 - 100 of 259

Effect of Acoustic Excitation on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface

November 1, 2014

Author(s)

Mark A. Kedzierski, Steven E. Fick

This paper quantifies the influence of acoustic excitation of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a commercial (Turbo-BII-HP) boiling surface. A nanolubricant with 10 nm diameter Al2O3 nanoparticles at a 5.1

Potential Research Areas in Residential Energy Storage for NISTs Engineering Laboratory

September 25, 2014

Author(s)

Mark A. Kedzierski, William V. Payne, Harrison M. Skye

This paper recommends research that is required to develop and, thus, enable cost effective, residential electricity storage systems for renewable energy. As residential electricity generation from renewable sources becomes more prevalent, residential

Effect of Acoustic Excitation on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface with Extensive Measurement and Analysis Details

August 6, 2014

Author(s)

Mark A. Kedzierski, Steven E. Fick

This paper quantifies the influence of acoustic excitation of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. A nanolubricant with 10 nm diameter Al2O3 nanoparticles at a 5.1 % volume

Horizontal Convective Boiling of R134a, R1234yf/R134a, and R1234ze(E)within a Micro-Fin Tube

June 24, 2014

Author(s)

Mark A. Kedzierski, ki-jung park

This report presents local convective boiling measurements in a micro-fin tube for R134a and two low global warming potential (GWP ) refrigerants: R1234yf/ R134a, 56/44 % mass and R1234ze(E). The heat transfer coefficient of the three test fluids were

Effect of Concentration on R134a/Al2O3 Nanolubricant Mixture Boiling on a Reentrant Cavity Surface with Extensive Measurement and Analysis Details

September 25, 2013

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. Nanolubricants with 10 nm diameter Al2O3 nanoparticles of various volume fractions (1.6 %, 2.3 %

Horizontal Convective Boiling of R134a, R1234yf/R134a, and R1234ze(E) within a Micro-Fin Tube with Extensive Measurement and Analysis Details

August 15, 2013

Author(s)

Mark A. Kedzierski, Ki-Jung Park

This report presents local convective boiling measurements in a micro-fin tube for R134a and two low global warming potential (GWP ) refrigerants: R1234yf/ R134a, 56/44 % mass and R1234ze(E). Water heating either in counterflow or in parallel flow with the

Measurement and Prediction of Vapor-Space Condensation of Refrigerants on Trapezoidal-Finned and Turbo-C Geometries

June 3, 2013

Author(s)

Mark A. Kedzierski, J S. Brown, Matt Carr

This paper reports vapor-space condensation heat transfer measurements for R123, R134a, and R245fa on two passively enhanced vertical surfaces and on a vertical smooth plate. The two enhanced surfaces were the integral trapezoidal-fin and the Turbo-CII

Nanofluids, Heat-Transfer Equipment and Plain-Vanilla

June 3, 2013

Author(s)

Mark A. Kedzierski

Nanoparticle materials can be very inexpensive and the technology for producing nanofluids is mature. The production of inks, paints, coatings, and suntan lotions is old enough to be a very competitive industry. So, nanofluids probably set the benchmark

R134a/Al2O3 Nanolubricant Mixture Boiling on a Rectangular Finned Pool Boiling Surface with Extensive Measurement and Analysis Details (NIST TN 1721)

May 16, 2013

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a rectangular finned boiling surface. A nanolubricant containing roughly 10 nm diameter Al2O3 nanoparticles of various volume

VISCOSITY AND DENSITY OF ALUMINUM OXIDE NANOLUBRICANT

May 8, 2013

Author(s)

Mark A. Kedzierski

This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester-based aluminum oxide (Al2O3) nanoparticle dispersion (nanolubricant) at atmospheric pressure over the temperature range 288 K to 318 K. Two Al2O3 particles

R134a/Al 2 O 3 Nanolubricant Mixture Pool Boiling on a Rectangular Finned Surface

October 31, 2012

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a rectangular finned boiling surface. Nanolubricants with 10 nm diameter Al2O3 nanoparticles of various volume fractions (1AlO, 2AlO

Effect of Al2O3 Nanolubricant on R134a Pool Boiling Heat Transfer

September 8, 2012

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a roughened, horizontal, flat surface. Nanofluids are liquids that contain dispersed nano-size particles. A lubricant based

VISCOSITY AND DENSITY OF CuO NANOLUBRICANT

June 14, 2012

Author(s)

Mark A. Kedzierski

This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester based copper (II) oxide (CuO) nanoparticle dispersion (nanolubricant) at atmospheric pressure for a temperature range from approximately 288 K to 318 K. The